But the rarest pulls are the Neon Ink Traveling Chocobos, which you can find only in Collector boosters
This looks like a ton of fun for the Commander format
There are a few silly cards that can absolutely win you the game that interact with Food tokens, including Feasting Hobbit, a two mana 2/2 creature that has Devour Food 3, giving it three +1/+1 counters for each Food you sacrifice when it comes into play
If you are a collector you buy a lot of packs that are about 4$ each and if you are a competitive player you are paying hundreds of dollars just to be able to build the deck you want to play for the current meta, just so you spent a similar amount as soon as the next expansion comes out to stay relevant in the meta
Add a cheap spell like Infuriate onto it before combat and suddenly it just takes one win to make this card hit much harder
Additionally, you will find invisible ink dossier cards slightly less frequently in Japanese-language Collector Boosters compared to all other languages of Collector Booster